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| ID No : | 630 Edit | Title: | Much of the Hydrogen Enrichment Near the Lunar South Polar is Outside the Permanently Shadowed Regions |
| Summary / Review : |
Maps of epithermal neutron count rates in the south polar region, from LRO / LEND.
"Analysis of S-band radar reflection data returned from the Clementine spacecraft suggested that deposits of water ice might exist in permanently shadowed regions (PSRs) near the lunar south pole. Later. results from the Lunar Prospector (LP) mission showed clear evidence for enhanced hydrogen at both lunar poles, but the spatial resolution was not sufficient to determine if the enriched hydrogen was, in fact, located in the PSRs. Consequently NASA recently launched the Lunar Reconnaissance Orbiter carrying the Lunar Exploration Neutron Detector (LEND), which has dramatically better spatial resolution for neutrons. In this work we present maps of epithermal neutron count rates in the south polar region using data from the collimated epithermal neutron detectors on LEND. The flux of epithermal neutrons are significantly suppressed in regions of high hydrogen content. and if the hydrogen were associated with the PSRs. the LEND detectors should see this association." (Author's abstract) Boynton, W. V.; Mitrofanov, I. G.; Sanin, A. B.; Litvak, M. L.; Hamara, D. K.; Droege, G. F.; Tretyakov, V. I.; Kozyrev, A. S.; Malakhov, A. V.; Mokrousov, M. I.; Vostrukhin, A. A.; Golovin, D. V.; Varenikov, A. B.; Shvecov, V. N.; Sagdeev, R. Z.; Milikh, G.; Chin, G.; Trombka, J.; McClanahan, T.; Starr, R.; Evans, L.; Shevchenko, V. |
| Author(s) : |
Boynton, W. V., et al. (22), [Goddard Space Flight Center] |
| Publication Date: | 2010 |
| Category(s) : |
Exploration and resources / Lunar / Geology and resources / Volatiles |
| Progress Type: | A ( A=Analysis only, D=Design, T=Testing, C=Completed or Commercial product ) |
| Web URL : |
http://hdl.handle.net/2060/20110012526
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| PERMANENT code(s) : | L,U |
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| NTRS : | 20110012526 |
| Submitted by : | MEP |
| Comments: |
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